Doesn't look square, just less intrusive.
step seal groove?
Pulled 68 tranny drum apart and the seal matches.
ADHD - go back to the 68 ? LOL
LOL, whatever I do the cleaning part should be easy from here.
looked up this transmission and it came up as a 1976 360 904/999 standard.
Oh yeah and as far as the rear shaft in the planetary on it I just flushed it out with a lot of carb cleaner and poured transmission fluid at it.
